Improvement in the manufacture of porous ware



UNITED STATES BRADFORD S. PIERCE, OF NEW BEDFORD, AND MASON R. PIERCE,OF

MANSFIELD, MASSACHUSETTS.

IMPROVEMENT IN THE MANUFACTURE OF POROUS WARE.

Specification forming part of Letters Patent No. 26,614, dated December'27, 1859.

To all whom it may concern:

Mansfield, both in the county of Bristol, State of Massachusetts, haveinvented anew and Improved Compost for Drains, Pipes, Tubes, Flues, andCores; and we do declare that the followingisafull and exact descriptionthereof.

The nature of our invention consists in the production of a porous bodyor substance, which is produced by slightly dampening the ingredientsherein set forth and applying a tamping or pressing process.

To enable others skilled in the art to make and use our invention, wewill proceed to describe its composition, construction, and utility. I

The components are water-lime or hydraulic cement with coarse sand orgravel moistened with water. We construct our pipe, tube, fine, or coreof any desired shape or length. To produce this porous body we take onepart water-lime or hydraulic cement and six parts coarse sand or gravelthoroughly mixed in a dry state, after which we slightly moisten withwater to the consistency of molding-sand used for foundry purposes. Thismixing process can be performed with a hoe or shovel, after which it isthrown into the mold with a scoop or shovel. While the filling processis going on the ingredients should be thoroughly tamped or pressed untilthe mold is filled and pipe completed.

This porous pipe can be used for draining low and wet lands, and isparticularly adapted to that purpose, as the water continually oozesthrough its surface, instead of entering at the joints, thus preventingobstruction to the interior of the pipe. It-is further adapted to thispurpose in consequence of the nature of the material being such that itbecomes hard and stone-like if placed under water or in any other dampplace, and still retains its porous quality. It can be manufactured byany person and upon the location where it is to be used. It matures byage, instead of by any baking or burning process, which makes the draincome much cheaper, and it is more durable than drains constructed withany other material. It can be used for conducting filth from sinks,privies, cesspools, and all other filthy localities. It is not liable toobstruction, as it can be molded in a round or cylindrical shape, andits joints overlap, so, as to form no obstruction of itself. When thispipe is used for a flue it can be molded in any desired shape, and isperfectly fire-proof, and can be used with all safety in conducting heator smoke between floors, joists, or partitions.

It is also adapted for lines in hot-houses, as the escape through thecore, or an explosion takes place and destroys the desired form to bemolded. It is further adapted to this purpose, as the material forms nogas of itself and is easily removed from the form cast, as the hot metaldestroys the uniting or setting properties of the core before it hasmatured by age. i

Having described the composition,construction, and utility of thisdrain-pipe, tube, fine, and core, we will proceed to describe the modeof manufacture.

The mold being prepared,we now proceed to fill the ingredients into itwith ascoop or shovel, and while so doing the tamping or pressingprocessis performed till the mold is filled and pipe finished. Then themold is placed on the bench. The plungeris then placed on the top of thecore and forced with the lever, which relieves the core from the mold.

The case and pipe are then lifted from the bottom of the mold andconveyed to a level surface and placed in an upright. position. Theclasp or fastener is then relieved from the case. The case is thenremoved from the pipe, leaving the same in an upright position, where itremains till the setting or uniting process performs its work.

Having described the tamping process as that by which we accomplish thecoherence of the material, we do not confine ourselves to that methodalone. If the pressure necessary tomake the mass cohere can be obtainedby other methods, the object we have in View will be equallywellobtained, which is the firm union of the particles by mechanicalpressure.

We do not claim vthe use of hydraulic cement as a material to bindtogether the ingredients of artificial building material and for otheranalogous purposes, broadly considered, as such is not new.

What we claim as our invention, and desire to secure by Letters Patent,is-

The manufacture of porous drain-pipes and other vessels which require topossess the property of porosity, when formed from the ingredients setforth and made to cohere by the process'of tamping or other equivalentmode of pressure, as described, and receiving its porosity from thesmall proportion of water used in mixing the ingredients, as set forthand described.

BRADFORD S. PIERCE. MASON PIERCE.

Witnesses:

ISAAC T. FISHER, SILAS H. HOWLAND.

